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Novel non-leakage mechanical seal single-stage sliding valve vacuum pump

A sliding valve vacuum pump and mechanical seal technology, which is applied to mechanical equipment, piston pump sealing devices, pumps, etc., can solve problems such as poor reliability, oil leakage, and complex structure, and achieve the effect of small friction coefficient

Inactive Publication Date: 2009-01-28
JIANGYIN TIANTIAN VACUUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional products adopt the sealing structure of skeleton oil seal, which has complex structure, poor reliability, short service life, serious oil leakage and air leakage

Method used

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  • Novel non-leakage mechanical seal single-stage sliding valve vacuum pump
  • Novel non-leakage mechanical seal single-stage sliding valve vacuum pump
  • Novel non-leakage mechanical seal single-stage sliding valve vacuum pump

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] see figure 1 ~6. The new type non-leakage mechanical seal single-stage slide valve vacuum pump involved in the utility model includes a pump body 1, a guide rail 3 is arranged on the pump casing of the pump body 1, and a pump shaft 10 is arranged in the cavity of the pump body 1, There is a lubricating oil hole in the center of the pump shaft 10. The inner cavity of the pump body 1 is divided into two chambers, one close to the closed end of the pump shaft 10, called the closed end chamber, and the other close to the outlet of the pump shaft 10. The shaft end is called the shaft end chamber. There are two sets of spool valve eccentric wheel mechanisms 2 installed on the pump shaft 10, one of which is set in the closed end chamber and is called the closed end spool valve eccentric wheel. mechanism, the other set is set in the shaft end chamber, called the shaft end spool valve eccentric wheel mechanism, and the closed end spool valve eccentric wheel mechanism includes a ...

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Abstract

The invention relates to a novel leak-free mechanically sealed single-stage slid valve vacuum pump, which is used for pumping the air etc., in a sealed container or a sealed system. The vacuum pump comprises a pump body (1); a cavity of the pump body is internally provided with a pump shaft (10); a shaft extending end lateral cover plate (1.7) is arranged on a shell wall of the pump body at the pump extending end of the pump shaft; the outer side of the shaft extending end lateral cover plate is fixedly provided with a mechanically sealed structure (14) which comprises an outer sealing receptacle (14.1), an inner sealing receptacle (14.2), a movable black lead sealing ring (14.9) and a static hard alloy sealing ring (14.8); the outer sealing receptacle (14.1) is fixedly arranged at the outer side of the shaft extending end lateral cover plate (1.7); the inner sealing receptacle (14.2), the movable black lead sealing ring (14.9) and the static hard alloy sealing ring (14.8) are closely sheathed on the shaft extending end of the pump shaft (10) in the outer sealing receptacle (14.1) from inside to outside in sequence; a plurality of springs (14.3) are evenly distributed in the circumferential direction of the inner sealing receptacle; the springs are arranged between a step surface of an inner hole of the inner sealing receptacle and the movable black lead sealing ring. The vacuum pump of the invention has simple sealing structure, good reliability, long service life and no oil leakage and air leakage happening.

Description

(1) Technical field [0001] The invention relates to a novel non-leakage mechanical seal single-stage sliding valve vacuum pump. It is mainly used in the process of pumping air in closed containers or closed systems and other special gases and condensable gases containing certain dust. At present, it is widely used in aviation, aerospace, petroleum, chemical, pharmaceutical, machinery, electronics, metallurgy, food, light industry and other manufacturing industries. (2) Background technology [0002] The traditional single-stage slide valve vacuum pump is mainly composed of pump body, pump cover, slide valve, guide rail, pump shaft, eccentric wheel, motor, transmission parts, oil tank and other components. Traditional products have the following deficiencies: [0003] Traditional products adopt the sealing structure of skeleton oil seal, which has complex structure, poor reliability, short service life, serious oil leakage and air leakage. (3) Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C25/02F04C27/00
Inventor 陈全玉
Owner JIANGYIN TIANTIAN VACUUM EQUIP
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